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Improved memory allocation efficiency of the 3D path preview generator.

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This commit is contained in:
bubnikv 2017-03-28 17:09:57 +02:00
parent 1fb302d480
commit 3ebf0ce7fd
3 changed files with 59 additions and 41 deletions
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52
xs/src/slic3r/GUI/3DScene.cpp
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@ -512,20 +512,12 @@ static void thick_lines_to_indexed_vertex_array(
idx_a[RIGHT] = idx_prev[RIGHT];
} else if (cross(v_prev, v) > 0.) {
// Right turn. Fill in the right turn wedge.
volume.triangle_indices.push_back(idx_prev[RIGHT]);
volume.triangle_indices.push_back(idx_a [RIGHT]);
volume.triangle_indices.push_back(idx_prev[TOP]);
volume.triangle_indices.push_back(idx_prev[RIGHT]);
volume.triangle_indices.push_back(idx_prev[BOTTOM]);
volume.triangle_indices.push_back(idx_a [RIGHT]);
volume.push_triangle(idx_prev[RIGHT], idx_a [RIGHT], idx_prev[TOP] );
volume.push_triangle(idx_prev[RIGHT], idx_prev[BOTTOM], idx_a [RIGHT] );
} else {
// Left turn. Fill in the left turn wedge.
volume.triangle_indices.push_back(idx_prev[LEFT]);
volume.triangle_indices.push_back(idx_prev[TOP]);
volume.triangle_indices.push_back(idx_a [LEFT]);
volume.triangle_indices.push_back(idx_prev[LEFT]);
volume.triangle_indices.push_back(idx_a [LEFT]);
volume.triangle_indices.push_back(idx_prev[BOTTOM]);
volume.push_triangle(idx_prev[LEFT], idx_prev[TOP], idx_a [LEFT] );
volume.push_triangle(idx_prev[LEFT], idx_a [LEFT], idx_prev[BOTTOM]);
}
if (ii == lines.size()) {
if (! sharp) {
@ -575,42 +567,22 @@ static void thick_lines_to_indexed_vertex_array(
if (! closed) {
// Terminate open paths with caps.
if (i == 0) {
volume.quad_indices.push_back(idx_a[BOTTOM]);
volume.quad_indices.push_back(idx_a[RIGHT]);
volume.quad_indices.push_back(idx_a[TOP]);
volume.quad_indices.push_back(idx_a[LEFT]);
}
if (i == 0)
volume.push_quad(idx_a[BOTTOM], idx_a[RIGHT], idx_a[TOP], idx_a[LEFT]);
// We don't use 'else' because both cases are true if we have only one line.
if (i + 1 == lines.size()) {
volume.quad_indices.push_back(idx_b[BOTTOM]);
volume.quad_indices.push_back(idx_b[LEFT]);
volume.quad_indices.push_back(idx_b[TOP]);
volume.quad_indices.push_back(idx_b[RIGHT]);
}
if (i + 1 == lines.size())
volume.push_quad(idx_b[BOTTOM], idx_b[LEFT], idx_b[TOP], idx_b[RIGHT]);
}
// Add quads for a straight hollow tube-like segment.
// bottom-right face
volume.quad_indices.push_back(idx_a[BOTTOM]);
volume.quad_indices.push_back(idx_b[BOTTOM]);
volume.quad_indices.push_back(idx_b[RIGHT]);
volume.quad_indices.push_back(idx_a[RIGHT]);
volume.push_quad(idx_a[BOTTOM], idx_b[BOTTOM], idx_b[RIGHT], idx_a[RIGHT]);
// top-right face
volume.quad_indices.push_back(idx_a[RIGHT]);
volume.quad_indices.push_back(idx_b[RIGHT]);
volume.quad_indices.push_back(idx_b[TOP]);
volume.quad_indices.push_back(idx_a[TOP]);
volume.push_quad(idx_a[RIGHT], idx_b[RIGHT], idx_b[TOP], idx_a[TOP]);
// top-left face
volume.quad_indices.push_back(idx_a[TOP]);
volume.quad_indices.push_back(idx_b[TOP]);
volume.quad_indices.push_back(idx_b[LEFT]);
volume.quad_indices.push_back(idx_a[LEFT]);
volume.push_quad(idx_a[TOP], idx_b[TOP], idx_b[LEFT], idx_a[LEFT]);
// bottom-left face
volume.quad_indices.push_back(idx_a[LEFT]);
volume.quad_indices.push_back(idx_b[LEFT]);
volume.quad_indices.push_back(idx_b[BOTTOM]);
volume.quad_indices.push_back(idx_a[BOTTOM]);
volume.push_quad(idx_a[LEFT], idx_b[LEFT], idx_b[BOTTOM], idx_a[BOTTOM]);
}
#undef LEFT